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LED Hoop Earring, Mk I 



.1 



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LED Hoop Earring, Mk I 



TOOLS: 



Written By: Eofhan 



PARTS: 



Jeweler's pliers (1) 
X-Acto knife (1) 



LED any size or type e.g. Mouser 604- 

WP7113QBCD(2) 

T- 1 is a good size. Larger is too much. 

Hoop earring (2) 

Plastic-coated and shiny are good. 

Electrical Tape (1) 

If you want to get fancy, you can match 
the tape-color to the earring-color (e.g.. 
red vinyl-coated hoops with red 
electrical tape). 

Monofilament (Fishing) Line (1) 

CR2032 Lithium Battery (2) 



SUMMARY 



Throwie-based modification of hoop earrings to illuminate them with LEDs. 



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Page 1 of 4 



LED Hoop Earring, Mk I 



Step 1 — LED Hoop Earring, Mk I 




• Note which lead is longer. Using 
the jeweler's pliers, carefully bend 
both leads 180 degrees. The idea is 
to illuminate the earring and the 
wearer, not the wearer's shoulder. 

• Bend the longer lead 90 degrees to 
one side. 

• Bend the shorter lead into a circle. 



Step 2 




• Cut a generous length of 
monofilament (8-12"). 

• Tie the center of the monofilament 
around the hoop. Use a Round- 
Turn and 2 Half-Hitches . 

• Make sure the knot is near the 
"top" of the earring. The battery and 
LED will hang from the knot. 



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LED Hoop Earring, Mk I 



Step 3 




• Cut a length of electrical tape, 
sufficient to cover one side of the 
battery. 

• Cut one side of the monofilament at 
a length where the LED will hang 
below the hoop. 

• Tape the cut monofilament and the 
longer (90° bend) LED lead to the 
positive face of the battery. 
Completely cover the battery's 
face. 

• If you want to get fancy, you can 
bend the lead in such a way that 
you can tie the monofilament to 
the lead. Don't let the 
monofilament interfere with good 
contact between the battery and 
lead. 

• Trim the tape to the edge of the 
battery. 



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LED Hoop Earring, Mk I 



Step 4 




• Cut a length of electrical tape that 
will cover half of the other battery 
surface. 

• Position the LED such that a lead 
falls on each side of the hoop. Tape 
the monofilament so the battery 
hangs evenly from both lengths. 

• Trim the monofilament to the edge 
of the tape. 

• Trim the tape to the edge of the 
battery. 



Step 5 




A third-hand is really useful, also. 



This document was last generated on 2012-11-03 01 :29:45 AM. 



• Bend the short lead into good 
contact with the battery. Do not let 
the lead touch the edge of the 
battery -- that's part of the positive 
contact. 



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Page 4 of 4